Free shipping or in-store pickup.
The availability of cheap third-party replacement cartridges is one of our favorite "features" of Samsung and Dell printers.
Search Ebay for C1760nw Toner, C410W Toner and M2830DW Toner to find replacement ink cartridges at about $20 to $30 for black toner, and anywhere from $6 to $30 per color cartridge (for the color laser printers).